NW-Mailing-List Digest, Vol 99, Issue 45

[NW Mailing List]

OK, so they could do flashing, that will make modeling more interesting.

thanx for the clearup

-Lynn-
On 9/18/2013 6:54 AM, nw-mailing-list-request at nwhs.org wrote:

> Subject:

> Re: NW-Mailing-List Digest, Vol 99, Issue 43

> From:

> NW Mailing List <nw-mailing-list at nwhs.org>

> Date:

> 9/17/2013 11:06 PM

>

> To:

> NW Mailing List <nw-mailing-list at nwhs.org>

>

>

> On 9/17/2013 10:24 PM, NW Mailing List wrote:

>> The issue was whether that lower red should be on or off,

>> in the case as the turnout it would be on because its an interlocking 

>> signal.

> Lynn,

>     Let me try one more time.

> A control point signal can /_only_/ display five different aspects in 

> combination with two horizontal red lights which are:

> 1.) Diverging Clear - two vertical yellow lights below

> 2.) Diverging Approach - two diagonal yellow lights at a 45 degree angle

> 3.) Diverging approach diverging - two flashing diagonal yellow lights 

> at a 45 degree angle

> 4.) Restricting - two diagonal yellow lights at a 315 degree angle

> 5.) Stop - one red light below

>

> In case #1, 2 ,3 & 4, if/*_both_*/ bottom lights burn out or are 

> obscured from vision, the signal aspect is to be considered as STOP, 

> regardless of what the previous signal aspect displayed. This is a 

> SAFETY precaution because you have no idea what aspect is actually 

> displayed or meant to be displayed. /For example - maybe you 

> previously passed an Approach Diverging signal and are preparing to 

> take the siding beyond the next signal. When you get within sight of 

> the next signal, instead of having a Diverging Approach aspect, you 

> have only two horizontal red lights. You must STOP. Maybe it is just 

> that the yellow lights have burned out. Maybe the bottom red light has 

> burned out, and after you passed the previous signal, something 

> happened to cause the siding to be fouled or maybe a rail broke. You 

> just don't know. You do know that you must stop and call the 

> dispatcher for instructions./

> In case #1, 2, 3, & 4, if _only one_ of the bottom lights is burned 

> out or obscured from vision, you can still determine what the signal 

> aspect should be and proceed according to signal indication.

> In case #5, if the bottom light is burned out or obscured from vision, 

> the aspect is still to be considered as STOP.

>

> Jimmy Lisle


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